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(No Model.) 4 Sheets-Sheet 1.

S. P. BURDBTT & J. BRADLEY. GIRGULAR KNITTING MAOHINE.

No. 442,168. Patented Dec. 9, 1890.

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(No Model.) 4 Sheets-Sheet 2.

S. P. BURDETT & J. BRADLEY. GIRGULAR KNITTING MACHINE.

No. 442,168. Patend Dec. 9, 1890.

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(No Model.) 4 Sheets-Sheet 3.

\ S. F. BURDETT & J. BRADLEY. CIRCULAR KNITTING MACHINE.

No. 442,168. Patented Dec. 9, 1890.

WITNEE E52 (No Model.) I 4Sheets-Sl1e.et 4. S. F. BURDETT &'J. BRADLEY.

CIRCULAR KNITTING MACHINE.

|NVENTUR5 Patented Dec. 9, 1890.

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WITN 61% @m fko g- UNTTED STATES PATENT OFFICE.

SAMUEL F. BURDETT AND JOHN BRADLEY, OF CIIELMSFOR-D, MASSACHU- SETTS, ASSIGNORS TO THE BYFIELD MANUFACTURING COMPANY, OF SAME PLACE.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 442,168, dated December 9, 1890.

Application filed November25, 1889. Serial No. 331,444. (No model.)

To all whom it may concern; head or cylinder being represented as nearly Be it known that we, SAMUEL F. BURDETT naked, the view being taken from a pointand JOHN BRADLEY, of Chelmsford, in the which fully shows the pattern device, yarncounty of Middlesex and State of Massachnguides, and needle cylinder or head. Fig. setts, have invented certain new and useful 4 is a diagram in top plan showing the two Improvementsin Circular-KnittingMachines, cams on the needle-head and the means diof which the following is a specification. reetly actuated thereby for the purpose of Our improvements have relation to knitoperating the pattern device, and showing, ting-machines employing a plurality of yarnalso, to a certain extent the means whereby IO guides which are adapted to be thrown into the shifting of the joinings in the fabric is 63 and out of operation for the purpose of proeffected. Figs. 5 and 6 are diagrams in plan, ducing striped fabrics. and partly in section, showing the means It is the object of the invention to provide beneath what is shown in Fig. -l for oper-- improved means whereby when a tubular ating and controlling the operations of the 5 fabric of sufficient length to produce a single pattern device. Fig. 7 is a side view of a stocking has been knit the line of joinportion of the ratcheted double-worm patings-that is,the line along which the yarns tern-cylinder and some of its connections. are brought into and thrown out of opera- Fig. 8 is a horizontal sectional view of the tionmay be changed to the opposite side said cylinder and the shaft upon which it is 20 of the web and the pattern reproduced in readapted to slide. Fig. 9 is a similar view verse order in a tubular fabric of the same showing the traveler for traversing the patlength, so that when the said lengths of the tern-cylinder upon its shaft, as also the means said fabric are made into a pair of stockings by which the traveler is supported. Fig. 10 the patterns or figures will match, and the is a bottom plan view of the pattern-disk and 5 joinings in each stocking will be on a line an associated part. Fig. ll is a section of down the back of the leg, where, if it shows the pattern-disk. at all, it will have the least inarring effect. In the drawings, a designates the needle- It is also the object-of the invention to prohead, I) the needles, 0 the yarn -guides, (l vide improved means for controlling the op-- the stitch-wheel, c the dividing-wheel, f the 3 eration of the pattern device which throws presser-wheel, g the landing-wheel, h the So the yarn-guides into and out of operation, so knocking-over wheel, i the auxiliary-wheel, that a long pattern may be knit with a com j the clearing-wheel, la the push-back, l the parat-ively small pattern device. end guard or guide, in the yarn-holding It is also the object of the invention to pro device, and n the yarn-severing device, of a 35 duce other improvements in knitting-macircular spring-beard-needle knittiug-machines for making striped fabrics, incidental chine to which we have applied our jointlyto the foregoing. wrought improvements.

Reference is to be had to the annexed The yarn-holding device consists of a swing drawings and the letters of reference marked ing weighted block adapted normally to rest 4 thereon, forming a part of this specification, upon a plate, under which block and upon 0 the same letters designating the same parts which plate the ends of the yarn are drawn or features, as the case maybe, wherever they and held after they are thrown out of action, occur. and the yarn-severing device consists of a ro- Of the drawings, Figure l is a top view tating disk attached to the side of the divid- 45 of a springboard-needle knitting machine ing-wheel,said disk havingasharp periphery, 5 equipped with our invention. Fig. 2 is a against which the yarns are drawn and by side elevation, looking from the pattern dewhich they are cut in the operation of throwvice toward the head or cylinder. Fig. 3 ing them out of action. These devices, howis also a side elevation, a part being shown ever, are not herein claimed, since they do 50 in section, parts being broken away, and the not form a part of our joint invention. roo

As shown, the knitting-head a is provided with two cams 0 1), one arranged on the opposite side of thehead from the other, and the cam 0 being arranged at a higher horizontal plane than the cam 19,

The yarn guides c are fulcru med on a bracket q, their heels 9' resting upon the pattern-disk s, and held down thereon by the springs t in a manner that will be understood by an inspection of Fig. 3 of the drawings. In the face of the pattern-disk s on lines or paths intersecting the heels 1" of the yarnguides the pattern-disk is provided ith holes, in which may be arranged pins madapted to engage the heels of the yarn-guides, raising the same, and so throwing the forward end of the guide down, carrying its yarn into action, it being understood that when the heel of a yarn-guide-rides on thcsurfaoe of the pattern disk t-heforward end of such guide willbe raised and its yarn carried or held outof action. The pattern-disk s is provided on its periphery with ratchet-teeth, with which a pawl 'U is adapted to engage, said pawl being pivoted on the end of a lever 10, an d held pressed toward the teeth of the ratchet-wheel by means of a spring so. The lever 10 is provided on its inner end with a hub, whereby it is fulcrumed on a stud y. To the upper end or face of the said hub there is secured an extension-piece .2, having a slot a formed therein, through which slot a pin Z) extends from the lever c, which latter lever is secured to a sleeve (2" on the vertical shaft (1'. The connection of thehub of lever to with f ulcruin-stud 1 is such as to permit the lever to be oscillated in a horizontal line and yet allow its outer or free end to be slightly raised and lowered. In the p resent instance the lever is simply loosely fulcrumed on the stud 3 so that it may be moved vertically at its free end, as described. Various means may, however, be provided to secure the vertical movement of the free end of the lever with the oscillating movement on its fulcrum-stud. Connected at one end with the lever w is a bar or lever e, the free end of which extends out so as to be engaged and actuated by the cams 0 and p on the head a.

The pattern-disk is provided on its under face (see Fig. 10) with a cam-segment f, extending half-way therearound, which camsegment is constructed and arranged to act on one end of a lever g, fulcrumed on a stud h, the other end of said lever g extending under the bar c forward of the point where it is connected to the lever 10. With this construction when the inner end of the lever g bears on the'cam-segment f the forward end of the said lever will be raised, raising the free end of bar e into the path of travel of cam 0 on the head a, and when the inner end of the lever g rests on the under face of the pattern-disk s the outer end of the said lever will be depressed, allowing the free end of the bar e to drop into the path of travel of the cam 19.

It will be obvious to those skilled in the art posite that at which the yarn-guides will be in like manner operated when the bar e is actuated by the cam 19, which latter cam is arranged on the cylinder at a point opposite the cam 0. Hence by this change in the operation of the bar 6 the line of the joinings of the yarns in the fabric will be changed from one side to the other.

t" designates a cylinder arranged to rotate and move longitudinally on a vertical shaft j. The said cylinder is provided with a double or compound worm 1 in which is arranged a traveler 7c, swiveled in a collar Z, secured to a vertical shaft 0.- lVi-th this construction and arrangement of parts when the pattern-cylinder t" is rotated, as in practice it is, the traveler It", traversing the worm or groove, as shown in Fig. 2, will gradually raise the said cylinder until the traveler reaches the bottom thereof, as shown in Fig. 7, when the traveler will be automatically shifted, so as to travel in the opposite direction in the worm-groove and so lower the said pattern-cylinder.

The operation of the cam 0 or p on the bar 6' will effect the vibration of lever 20, its extension 2' and lever 0, resulting in the oscillation of the sleeve d on the shaft (1, with which sleeve pawl-arm n is connected. The free end of arm n is provided with a springnressed pawl m, which engages the teeth formed on the outer surface orperiphery of the pattern-cylindert resulting as the arm n" is vibrated in a step-by-step rotation of the said cylinder.

0 is a vertical shaft, upon which shaft there is fulcrumed an arm or lever 19, provided on one end with a pin (1, extending up behind the pawl r, arranged to actuate the patterndisk 8. i

The collar Z has a dog 4' pivoted upon it, the free end of which dog extends into the worm-groove of the pattern-cylinder t" in such position as to be engaged and moved by the pattern-pins 6', arranged in holes's", formed in the said worm-groove \Vhen one of the said pins engages the free end of the dog 0', it will move the said dog in the direction of arrow 1, carrying the lug it, against which the dog bears, in the same direction. The lug a is secured to the sleeve 0 on shaft 20, to the upper end of which sleeve is secured an arm .90, provided on its free end with a pin y, extending up behind a pin ,2 projecting inwardly from the adjacent end of arm or lever 13'. hen the dog r moves lug u in the direction of arrow 1, arm 00 will be moved in the direction of arrow 2 marked thereon, and the pin acting on the pinzflwill move-the opposite end of arm 19 in the direction of arrow 3, allowing pawl n to engage the teeth of ratchet-disk s, and when the dog 1' rides on the bottom of the worm-grooves the several parts will be moved by spring 1), connected at one end with the said lever p and at the other end with a stationary part of the machine, in a direction opposite to the flight of the arrows, and so cause pin q to carry pawl 1' out of engagement with the teeth of the pattern-disk. By carrying pawl 1: from time to time out of engagement with the ratchet teeth of the pattern-disk s the latter can be made COlIlpfllEttlX'Qly small and yet efiect the knitting of a varied pattern in quite a long web.

The construction, arrangement, and timing of parts are such that a web sufficiently long for a stocking may be knit in one-half of a revolution of the pattern-disk 5, during which time the traveler it may have traversed the worm-groove of the pattern-cylinder71 from end to end thereof, so that the said traveler will begin its return in the worm-groove the moment that bar 6 is changed from contact with one cam on the needle-cylinder to the other, thus reproducing the pattern in reverse order and changing the line of joining of the stripping-threads from one side of the tubular web to the other.

Various changes may be made in the form and arrangement of parts comprising our improvements without departing from the nature or spirit thereof.

Having thus explained the nature of our improvements and described a way of constructing and using the same, we'declare that what we claim is 1. The combination, with the needle-cylinder and the two cams thereon arranged in different horizontal planes, of a pattern-plate, actuating mechanism therefor, and a bar e for actuating the said pattern-plate-actuatin g mechanism, movable into the path of either of said cams, as set forth.

2. The combination, with the needle-cylinder and the two cams thereon arranged in different horizontal planes, of a pattern-plate,a lever and pawl for actuating the said patternplate, a bar connected to the said lever and movable into the path of eitherof the said cams, a cam on the pattern-plate, and a pivoted lever arranged to be actuated by the cam on the pattern-plate and to move the con nected bar from the path of travel of one cam 011 the needle-cylinder to another, as set forth.

3. Apattern device for knitting and cognate machines, consisting of a cylinder having a double or compound worm-groove formed in its face and provided with ratchet-teeth, whereby it may be turned, and pattern-pins in the said groove, as set forth.

4.1K pattern mechanism for knitting and cognate machines, consisting of a cylinder having a double or compound worm-groove formed in its face and provided with ratchetteeth, whereby it maybe turned, and pat-ternpins in the said groove, in combination with a shaft upon which the said cylinder is adapted to turn and more longitudinally, a reciprocating pawl engaging said ratchetteeth to rotate the said cylinder, and a swiveled traveler arranged on a stationary support and adapted to operate in the said worm-groove, as set forth.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this 12th day of November, A. D. 1889.

SAMUEL FJBUR-DETT. JOHN iR-ADLEY.

Witnesses:

ARTHUR W. CRossLnv, KATHERINE E. BROW'N. 

